"Like something had happened in her life. There was some switch flipped. Something was up," Carrie said.

"Her skin was glowing. Her eyes were gorgeous. Like, her body was amazing. Something had happened, and I was like, 'What are you doing? I need to know. The world needs to know.' And she said, 'I went vegan.'"

That choice helps her make better decisions about what she eats, Carrie says.

"It's easier for me, actually, when I go out to eat because if I'm like, 'Oh, I'm vegan. I can't have that cheesy pasta,'" she says.